Answer:
C.
Step-by-step explanation:
C. best describes the situation:
$3.50 (per drink she buys) is subtracted from her $40 gift card.
—Example———————————
Let’s say Katie wants 2 drinks.
(x is the amount of drinks she wants.)
So in this case:
x = 2 (because she wants 2 drinks.)
Plug it into your equation.
3.50x - 40 —> 3.50(2) - 40
($3.50 times 2 is $7. Aka 2 drinks cost $7.)
$7 - $40
7 dollars is deducted from her 40 dollars.
———————————
While A describes:
$3.50 (per drink she buys) is added to her $40 gift card.
B describes:
$40 (per drink she buys) is subtracted from $3.50
D describes:
-$40 (per drink she buys) added to $3.50
E describes:
-$3.50 (per drink she buys) is added to her $40 gift card.